Electrode plate and electrochemical device comprising same

The invention relates to an electrode pole piece and an electrochemical device comprising the same, the electrode pole piece comprises a current collector, a first active material layer located on the surface of the current collector and a second active material layer located on the first active material layer, the first active material layer comprises a first binder, and the second active material layer comprises a second binder. The second active material layer comprises a second binder, and the swelling degree of the second binder is greater than that of the first binder. The electrode plate provided by the invention has relatively high electron and lithium ion transmission capability, the low-temperature discharge capability of the lithium ion battery is improved, the dynamic characteristics of the electrode plate are improved, and meanwhile, the high energy density and the high power density of the lithium ion battery are realized. 本公开涉及一种电极极片及包含其的电化学装置，所述电极极片包括集流体，以及位于集流体表面的第一活性材料层，和位于第一活性材料层上的第二活性材料层，所